| | PAGE |
| Mountain Billy under the Gnatcatcher's Oak. | [Frontispiece] |
| Our Valley | [4] |
| Head of Black-headed Grosbeak | [8] |
| Head of Rose-breasted Grosbeak | [8] |
| In Hot Pursuit (Brewer's Blackbird and Bee-birds) | [13] |
| The Little Lover (Western House Wren) | [20] |
| A Trying Moment (Western House Wren) | [32] |
| Nest of Western Gnatcatcher | [39] |
| Head of California Woodpecker | [66] |
| Head of Red-headed Woodpecker (Eastern) | [66] |
| Jacob and Bairdi visiting the Old Nest Tree | [78] |
| Head of Arizona Hooded Oriole | [89] |
| Head of Baltimore Oriole (Eastern) | [89] |
| Head of California Chewink | [93] |
| Head of Eastern Chewink | [93] |
| Valley Quail and Road-runner | [99] |
| Nest of the Bush-tit | [104] |
| Pocket Nest in an Oak | [108] |
| The Big Sycamore | [114] |
| Along the Line of Sycamores | [124] |
| Head of Black Phœbe | [129] |
| Head of Eastern Phœbe | [129] |
| The Little Hummer on her Bow-knot Nest | [148] |
| The Swing Nest of the Hummer | [157] |
| A Shady Bower | [160] |
| Head of Green-tailed Chewink | [163] |
| The Nosebag Nest (Vigors's Wren) | [173] |
| The Plain Titmouse in her Doorway | [176] |
| Which was the Mother Bird? (Wren-tit and Lazuli Buntings) | [189] |
| The Phainopeplas on the Pepper-tree | [194] |
| The Phainopepla's Nest in the Oak Brush Island | [198] |
| Eucalyptus Avenue, showing Pollarded Trees on the Right | [212] |
| Eucalyptus Wood stored for Market in a Eucalyptus Grove | [214] |
| Mountain Billy Deserted | [220] |
| White Egret. Ardea egretta. |
| Green Heron. Ardea virescens anthonyi. |
| Spotted Sandpiper. Actitis macularia. |
| Valley Quail. Callipepla californica vallicola. |
| Mourning Dove. Zenaidura macroura. |
| Turkey Vulture. Cathartes aura. |
| Hawk. Buteo ——. |
| Sparrow Hawk. Falco sparverius deserticolus. |
| American Barn Owl. Strix pratincola. |
| Western Horned Owl. Bubo virginianus subarcticus. |
| Burrowing Owl. Speotyta cunicularia hypogæa. |
| Road-runner. Geococcyx californianus. |
| California Woodpecker. Melanerpes formicivorus bairdi. |
| Red shafted Flicker. Colaptes cafer. |
| Dusky Poor-will. Phalænoptilus nuttalli californicus. |
| Black-chinned Hummingbird. Trochilus alexandri. |
| Rufous Hummingbird. Selasphorus rufus. |
| Arkansas Kingbird. Tyrannus verticalis. |
| Cassin's Kingbird. Tyrannus vociferans. |
| Black Phœbe. Sayornis nigrescens. |
| Western Wood Pewee. Contopus richardsonii. |
| Flycatcher. Empidonax ——. |
| Horned Lark. Otocoris alpestris chrysolæma. |
| California Jay. Aphelocoma californica. |
| American Crow. Corvus americanus. |
| Yellow-headed Blackbird. Xanthocephalus xanthocephalus. |
| Red-winged Blackbird. Agelaius phœnicius ——. |
| Arizona Hooded Oriole. Icterus cucullatus nelsoni. |
| Bullock's Oriole. Icterus bullocki. |
| Brewer's Blackbird. Scholocophagus cyanocephalus. |
| Western House Finch. Carpodacus mexicanus frontalis. |
| Goldfinch. Spinus ——. |
| White-crowned Sparrow. Zonotrichia leucophrys gambeli (?). |
| Golden-crowned Sparrow. Zonotrichia coronata. |
| Heerman's Song Sparrow. Melospiza fasciata heermanni (?). |
| Spurred Towhee or Chewink. Pipilo maculatus megalonyx. |
| Green-tailed Towhee. Pipilo chlorurus. |
| California Towhee. Pipilo fuscus crissalis. |
| Black-headed Grosbeak. Habia melanocephala. |
| Western Blue Grosbeak. Guiraca cærulea eurhyncha. |
| Lazuli Bunting. Passerina amœna. |
| Louisiana Tanager. Piranga ludoviciana. |
| Cliff Swallow. Petrochelidon lunifrons. |
| Phainopepla. Phainopepla nitens. |
| White-rumped Shrike. Lanius ludovicianus excubitorides. |
| Warbling Vireo. Vireo gilvus (?). |
| Hutton's Vireo. Vireo huttoni (?). |
| Least Vireo. Vireo bellii pusillus (?). |
| Long-tailed Chat. Icteria virens longicauda. |
| American Pipit. Anthus pensilvanicus. |
| California Thrasher. Harporhynchus redivivus. |
| Vigors's Wren. Thryothorus bewickii spilurus. |
| Western House Wren. Troglodytes ædon aztecus. |
| Plain Titmouse. Parus inornatus. |
| Wren-tit. Chamæa fasciata. |
| California Bush-tit. Psaltriparus minimus californicus. |
| Western Gnatcatcher. Polioptila cærulea obscura. |
| Varied Thrush or Oregon Robin. Hesperocichla nævia. |
| Western Bluebird. Sialia mexicana occidentalis. |